Package with destructible portion for dispensing

ABSTRACT

A package comprising a pocket of a stiff material and a flexible bag secured within and to the edges of the pocket. The mouth of the pocket is expanded when the bag is supplied with the package material, to form a support and protective covering for the bag. The bottom of the pocket and the bag portion connected thereto can be removed from the remainder by separation along a destructible portion to provide a dispensing opening in the bag for removal of the contents.

[ Feb. 8, 1972 United States Patent Kanada et al.

PACKAGE WITH DESTRUCTIBLE PORTION FOR DISPENSING [72] Inventors: TakashiKanada, 28 Shimsaka, 1 Chome;

3,339,721 9/1967 3,446,632 5/1969 Le Van...... 2,999,627 9/1961Reinhardt.......................

To hio Tanaka, 128, Y t ak i h FOREIGN PATENTS OR APPLICATIONS both ofKawasaki-shi, Japan 574,332 3/1958 July 7, 1969 [21] Appl. No.: 839,237

Italy..................................229/14 BW [22] Filed:

Primary Examiner-Leonard Summer AttorneyJay M. Cantor 7 5 I ifiMnuM Bl/B93 23 2 55 2 .ms D MAN M 3M6 w m ,6 z mr 1R A H51 A 6D 6 B 9 s 5 6 ./2 0m 1 l m... 0 m d 5 E U mm .1 1] 2 8 5 55 [.1

ABSTRACT A package comprising a pocket of a stifi' material and aflexible bag secured within and to the edges of the pocket. The mouth ofthe pocket is expanded when the bag is supplied with the packagematerial, to form a support and protective covering for the bag. Thebottom of the pocket and the bag portion connected thereto can beremoved from the remainder by n to provide a di spensing [56] ReferencesCited separation along a destrucuble portio UNITED STATES PATENTS3,144,129 8/1964 Weisberg......................

opening in the bag for removal of the contents.

.206/56 AA X 4 Claim, 18 Drawing Figures PATENTED FEB 8 I972 SHEEI 1 BF3 INVENTOR.

PATENTED FEB 8 I972 SHEET 3 0F 3 IN VENTOR.

PACKAGE WITH DESTRUCTIBLE PORTION FOR DISPENSING A packaging bagcomprising an outer covering consisting of two stiff sheets withancillary ripping lines, which cover an inner bag formed by folding athin sheet of thermosealing material to form the bottom, andheat-sealing the sides simultaneously with the outer covering sheets.The contents to be packaged are introduced from the top opening of theinner bag after which the opening is heat sealed. The package is easilyopened by ripping the bag manually along the ancillary ripping line,formed in the stiff outer covering, and the contents can be emptied.When the package is fully loaded, the bottom edge of the outer coveringbulges to form a stable base for standing the package in an uprightposition. The bottom of the inner bag is supported by the stiff outercovering and does not touch the standing surface.

This invention relates to a packaging bag consisting of two stiff outersheets between which a thin bag is sealed with the outer sheets alongboth side edges said stiff outer sheets having ancillary ripping linescrossing from one side to the other.

Heretofore, self-supporting packaging bags have been fonned from thickmaterial making it difficult to manually rip and open the bag.Furthermore, since an inner bag has not been employed, breakage in theseams caused by shocks, specially in the seams on the bottom part, havecaused leakage of the contents.

The object of this invention lies in providing a packaging bagcomprising an outer covering consisting of two stiff sheets withancillary ripping lines formed therein from one edge to the other, andan inner bag formed by folding a thin sheet of thermosealing materialbetween the stiff outer sheets and simultaneously thermosealing bothedges of the outer sheets to the inner sheet.

Another object of this invention is to provide a packaging bag whichfeatures ancillary ripping lines joining two adjacent edges ornonadjacent edges in the stiff outer covering.

Yet another object of this invention is to provide a packaging bag whichfeatures on outer covering with ancillary ripping lines covered on oneor both surfaces by a thin film. If desired the surface of said outercovering can be covered on one or both surfaces by a thin film.

Still another object of this invention is to provide a packaging bagwhich is flat and can be packed by stacking one upon the other.

Another object of this invention is to provide a packaging bag with athin inner bag which is protected by a stiff outer covering, the bottomedge of which bulges outwards in a bulbous shape, is self-supporting,and is easily manually opened by means of the ancillary ripping line inthe outer covering and thereby easily emptied of its contents.

Yet another object of this invention is to provide a flexible packagingbag which features an outer covering and an inner bag, which is sealedafter filling with the contents, and heat sealed with the outer coveringalong two edges and top edge, the bottom portion of the inner bag beingunattached and merely supported by the outer covering.

Still another object of this invention is to provide a packaging bagwith an inner bag which is amply protected against bursting by the shockresistant properties and flexibility between the outer covering and theinner bag when the inner bag is filled and the top opening is sealedalong with the top edge of the outer covering.

Another object of this invention is to provide a self-supportingpackaging bag which, when the inner bag is filled and the top opening issealed, the bottom of the inner bag is expanded to form a concave curveand is raised from the supporting surface thereby preventing dirtyingand damaging of the inner ba still another object of this invention isto provide a packaging bag which when filled with its contents andsealed will pack compactly and firmly into shipping boxes by packing andby wedging-in.

These and other objects of the invention will become manifest uponreading the following description in conjunction with the accompanyingdrawing wherein:

FIG. 1 is a frontal view, with a part in section, of a basic packagingbag.

FIG. 2 is a side view, in section, taken on line 2-2 of FIG. 1.

FIG. 3 depicts the self-supporting packaging bag from a diagonal view.

FIG. 4 is a side view, in section, taken on line 4-4 of FIG. 3.

FIG. 5 is a front view of a modification of the packaging bag with apart in section.

FIG. 6 is a side view, in section, taken on line 6-6 of Flg. 5.

FIG. 7 is a front view of another modification with a part in section.

FIG. 8 is a side view in section, taken on line 8-8 of FIG. 7.

FIG. 9 is a front view of still another modification with a part insection.

FIG. 10, is a side view, in section taken on line 10-10 of FIG. 9.

FIG. 1 l is a front view of another modification with a part in section.

FIG. 12 is a side view in section, taken on line 12-12 of FIG. 11.

FIG. 13 is an enlarged side view, in section taken on line 13-13 ofFlG.11.

FIG. 14 is a frontal view of another modified form, with a part insection.

FIG. 15 is a side view, in section, taken on line 15-15 of FIG. 14.

FIG. 16 is an enlarged side view, in section, taken on line 16-16 ofFIG. 14.

FIG. 17 is a frontal view of still another modified form with a part insection.

FIG. 18 is a side view, in section taken on line 18-18 of FIG. 17 andFIG. 19 is an enlarged side view in section taken on line 19-19 of FIG.17.

Various materials are suitable for the stiff outer covering such asKraft paper, carton board with or without a covering film withheat-sealing properties such as polyethylene, polypropylene, orpolyvinylchloride; on one or both surfaces, or more suitably a thicksheet of polyethylene, polypropylene or polyvinylchloride can be heatsealed to the thin inner bag which is described in more detail later.The thickness of the aforementioned plastic sheets depend on thestiffness of the material and the size of the packaging bag but is inthe order of 0.1 mm.

Materials suitable for the inner bag are numerous, and includeheat-sealing plastic films such as polyethylene film, polypropylenefilm, polyvinylchloride film, films comprising a plurality of laminatedfilms, or films comprised of laminates of paper, cellophane, aluminumfoil with the above-mentioned plastic films. The thickness of thematerial depends on the size of the packaging bag. Thickness on theorder of 0.01 to 0.1 mm. provides adequate compliance.

The following is a description of a basic packaging bag which embodiesthis invention as depicted in FIGS. 1, 2, 3 and 4.

Outer covering sheets I, 2 of stiff material have slits 3, 4 formed intothe upper part and across the sheets, which are divided into uppersections 5, 6 and lower sections 7, 8. A narrow strip of thermoplasticfilm 9, 10 comprising polyethylene, polypropylene or polyvinylchlorideand of thickness in the order of 0.02 to 0.05 mm. is heat sealed to theback surface of slits 3, 4.

, Inner bag 12 is formed by folding a thin plastic sheet at the bottom11 and positioning it between outer sheets 1, 2 after which edges 13, 14are sealed by heat sealers to form sealed seam joints [5. The inner bag12 is formed and simultaneously attached to the outer covering to formpackage bag BI.

Opening 16 of package bag B1 is used to fill the inner bag 12 afterwhich it is sealed by heat sealers by applying heat and pressure to formsealed seam l7 and complete the package P. The package P has an innerbag which expands on being filled and the bottom becomes bulbous andconcave in shape and is thereby raised. Bottom edge 19 of outer covering1, 2 bulges out laterally and becomes self-supporting as depicted inFIGS. 3 and 4. Outer covers 1, 2 and inner bag 12 are connected onlyalong both side edges and the top, therefore inner bag 12 can readilychange shape. Also since sealed seams, 15, are comprised of four layerswhich are sealed together seams 15 are stiff and strong and thus preventthe bag B of the filled package P from bending.

Package P can be readily manually opened by ripping the outer covering1, 2 along ripping slit 3, 4 film 9, 10 and inner bag 12 therebyremoving top portion 5, 6 of the package to provide a large cleanopening for removal of the contents.

The following is a description of another modification as shown in FIG.and FIG. 6. Outer covers 21, 22 are divided into the top triangularparts 25, 26 and parts 27, 28. A narrow strip of plastic film 29, 30corresponding to the aforedescribed narrow strip 9, is heat sealed tothe back side of slits 23, 24.

Inner bag 32 is formed by folding a thin plastic sheet at 31 andpositioning it between outer covers 21, 22 and heat sealing it at bothedges 33, 34 by applying heat and pressure to form seams 35, whilesimultaneously sealing the edges of inner bag 32 and thereby formingpackaging B2.

Bag B2 is filled through the top opening 36 of inner bag 32 after whichopening 36 is sealed by heat scaling to form a complete package. Thefeatures and shape of the resultant package is identical to theaforedescribed package P. Ripping slits 23, 24 in outer cover 21, 22permit easy manual ripping, opening and emptying of the package.

Another modification is depicted in FIGS. 7 and 8. Stiff outer cover 41,42 has sewing machine perforations 43, 44 along its upper part from oneedge to the other.

Inner bag 52 is formed by folding a thin plastic sheet at 51 and ispositioned between stifi outer cover sheets 41, 42 and sealed at bothedges to form seams 55. Simultaneously both edges of inner bag 52 aresealed to form packaging bag B3.

lnner bag 52 is filled through the opening 56 of packaging bag B3 afterwhich opening 56 is sealed by heat sealing to form a complete package,The shape and features of the package correspond to the aforedescribedpackage P. The contents can be easily removed by manually ripping theouter cover 41, 42 along perforations 43, 44 to remove the upper parts45, 46 of outer cover with the upper part of inner bag 52.

Another modification is depicted in FIG. 9 and 10. Stiff outer cover 61,62 has slits 63, 64 along its upper part, crossing from one edge to theother. The entire back surface of the outer covers 61, 62 is covered bythermoplastic films 69, 70 corresponding to previously described films9, 10.

Inner bag 72 is formed by folding a thin plastic sheet at 71 andpositioning it between outer covers 61, 62 sealing at both edges byapplying heat and pressure by heat sealers to form seams 75, whilesimultaneously sealing the edges of inner bag 72 to form packaging bagB4.

Inner bag 72 is filled through the opening 76 of packaging bag B4 afterwhich opening 76 is heat sealed to form a complete package. The shapeand features of the package correspond to the aforedescribed package P.In the event that condensation of water forms on the outer surface ofinner bag 72 the films 69, 70, covering the inner surface of outercovering 61, 62 prevent moisture from affecting the outer covers 61, 62to thereby prevent deterioration of stiffness and strength of the outercovers 61, 62. Slits 63, 64 of the outer covers 61, 62 permit easymanual ripping of the outer covering and the inner bag whereby to removeupper sections 65, 66 to permit the opening of the package and removalof its contents.

Another modification is depicted in FIGS. 11, 12 and 13. Stiff outercovers 81, 82 have slits 83, 84 along the upper parts from one edge tothe other. Outer covers 81, 82 have their total surface covered withplastic film 89, 90 corresponding to previously described film 9, 10.

Inner bag 92 is formed by folding a thin plastic sheet at 91 andpositioning it between outer covers 81, 82 and subsequently heat-sealingat both edges by applying heat and pressure to form seams 95 whilesimultaneously sealing the edges of inner bag 92 to fonn packaging bagB5.

Inner bag 92 is filled through the opening 96 of packaging bag B5 afterwhich opening 96 is sealed by heat sealers to form a complete package.The shape and features of the package correspond to the aforedescribedpackage P. The entire surfaces of the outer coverings 81, 82 are coveredby films 89, 90 and due to the moisture-preventing characteristic of thecovering films the outer coverings 81, 82 do not lose stiffness orstrength through the effects of moisture from outside of the package.Slits 83, 84 of outer cover 81, 82 permit easy manual ripping of theouter covering and inner bag simultaneously for easy removal of theupper sections 85, 86 whereby to open the package and remove thecontents.

Another modification is depicted in FIgS. 14, 15 and 16. Stiff outercovers 101, 102 are completely covered by thermoplasu'c films 109,corresponding to the aforedescribed films 9, 10. The upper part of outercovers 101, 102 have sewing machine perforations 103, 104 across theupper edge.

Inner bag 112 is folded along 111 and positioned between outer covers101, 102 after which seams 115 are formed by applying heat and pressureto both edges by means of heat sealers to simultaneously seal the edgesof inner bag 112 to form packaging bag B6.

Inner bag 112 is filled through the opening 116 after which the opening116 is sealed by heat sealers to fonn a complete package. The shape andfeatures of this package correspond to the aforedescribed package P, themoisture-resistant qualities of outer coverings 101, 102 correspond tothat of packaging bag B5. Outer coverings 101, 102 can be opened byripping upper section 105, 106, together with inner bag 112, manuallyalong sewing machine perforations 103, 104 and the contents of thepackage can then be removed.

Another modification is depicted in FIGS. 17, 18 and 19. Stiff outercovers 121, 122 have along its upper part from one edge to the other,slits 123, 124. Outer covers 121, 122 have their outer and innersurfaces completely covered by thin plastic films 129, withthennosealing characteristics similar to the aforedescribed films 9, 10.

Inner bag 132 is formed by folding a plastic sheet at its bottom 131 andpositioning it between outer covers 121, 122 after which it is heatsealed at both edges by applying heat and pressure to form seams 135while simultaneously sealing the edges of the inner bag 132 to formpackaging bag B7.

Inner bag 132 is filled through the opening 136 of packaging bag B7after which the opening 136 is heat sealed by heat sealers to form acomplete package. The shape and features of this package correspond tothe aforedescribed package P. Outer covers 121, 122 are completelycovered on their outside and inside surfaces by plastic film 129, 130therefore the outer cover is not affected by moisture on the outside ormoisture on the inside caused by dew fonning on the outside surface ofthe inner bag. As a result, loss of stiffness or strength by moistureaffecting the outer covers 121, 122 can be prevented.

The outer cover and inner bag can be simultaneously manually rippedalong slits 123, 124 and the upper sections 125, 126 can be removed fromthe package to fonn an opening for removing the contents.

In the aforedescribed various forms of packaging bags sewing machineperforations can be substituted for the slits in the outer cover orwhere sewing machine perforations have been used these can be replacedby slits. Where thin plastic film is used to cover one or both surfacesof the outer covering, the outer covering material is water-absorbentpaper, when fairly thick plastic film is used for the outer coveringthis becomes unnecessary.

What we claim is:

1. A package comprising a pair of relatively stiff outer covering sheetssecured together at three edges thereof to form a pocket, each saidsheet having a top and bottom portion separated by an elongated slitextending from one of said edges to another of said edges and said slitsbeing in registraedges.

3. A package as defined in claim 1 wherein said slits extend between twoadjacent said edges across a corner of the package.

4. A package as defined in claim 1 wherein the film is between the bagand the walls of the pocket.

1. A package comprising a pair of relatively stiff outer covering sheetssecured together at three edges thereof to form a pocket, each saidsheet having a top and bottom portion separated by an elongated slitextending from one of said edges to another of said edges and said slitsbeing in registration a flexible bag secured within and to said threeedges of said pocket, a thin tearable film connecting one of said topand bottom portions across said slit and secured to a portion of saidflexible bag, whereby said package can be torn along said slits toprovide an opening for dispensing the contents of the bag.
 2. A packageas defined in claim 1 wherein said slits extend transversely of two ofsaid edges and parallel to another of said edges.
 3. A package asdefined in claim 1 wherein said slits extend between two adjacent saidedges across a corner of the package.
 4. A package as defined in claim 1wherein the film is between the bag and the walls of the pocket.